Water Sprinklers in Visual Studio .NET

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WHEN WATER STARTS TO FLOW Once water starts flowing through any sprinkler, the fire protection system will sound an alarm (in addition to any prior smoke or heat detector alarms) and commonly will perform an emergency power shutdown for the sprinklered zone If your equipment is on UPS, consult a fire protection specialist to find out requirements for UPS shutdown It is also advisable that water flow alarms be sent to a security center or directly to the local fire department
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There are two kinds of sprinkler systems: wet-pipe and dry-pipe Wet-pipe systems are always filled with water, but dry pipe is just that until a heat sensor gives a first-level warning, which causes the pipes to fill with water Individual sprinkler heads start to spray only when they are exposed to enough heat to melt a water flow plug, so with wet- or dry-pipe systems, water will not necessarily go everywhere Dry-pipe systems, however, protect your equipment from pipe failures Once there is enough local heat to trigger a sprinkler head, the equipment directly under it will probably already be beyond repair You really do want the sprinkler to spray the hot spot to prevent the fire from spreading further
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During my career in computing and networking, I have never had a fire in one of my equipment rooms In my earlier days in chemistry, however, I had direct experience with laboratory fires, so I can offer some perspective from both sides: preventing damage by putting out fires and damaging equipment with firefighting methods Luckily, I have never had a networking equivalent to dealing with budding genius organic chemists who boiled ether over an open flame or poured waste molten sodium into the sink In my networking career, I have had several outages caused by water-based firefighting elsewhere in the building In the most dramatic case, our computer room was on the first floor of an office and shopping building, which the building management closed on Sundays and turned off the heat One especially cold Sunday, the wet-pipe sprinkler pipes froze About 10 AM the next day, the pipes thawed and burst Water sprayed everywhere, not from the sprinkler heads but directly from pipe breaks in the walls and ceiling, accompanied by a shower of damp drywall We desperately did emergency power shutdowns, which, with some of our equipment, required pulling power plugs while standing on wet floors (we were all young at the time) Of course, our staff was far calmer than the patrons in the beauty parlor down the hall, who were being showered with their heads in electrical hair driers Several lessons came from
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this experience First, don t put your critical equipment in facilities that don t have 24/7 heating in cold climates Second, insist on dry paper pipes Sprinkler flow in the actual computer room is very likely to mean that you have a real problem right there A different set of challenges, however, come from water-based firefighting on higher floors of your building Again, I refer you to the first law of plumbing: Water runs downhill When I build computer rooms from scratch, and they have a raised floor, I make a practice of installing large floor drains if they are not already present In some buildings, it is possible to put a water-resistant drop ceiling between the floor above you and your actual ceiling and have some water drains there If you have emergency exit doors that exit directly onto stairwells, it is good practice to give them strong gaskets and make them water-resistant Stairwells are often the easiest exit for water at higher levels
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